CN104423240B - Image forming apparatus and its image forming method - Google Patents
Image forming apparatus and its image forming method Download PDFInfo
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- CN104423240B CN104423240B CN201410245438.6A CN201410245438A CN104423240B CN 104423240 B CN104423240 B CN 104423240B CN 201410245438 A CN201410245438 A CN 201410245438A CN 104423240 B CN104423240 B CN 104423240B
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/20—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat
- G03G15/2003—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat
- G03G15/2014—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using contact heat
- G03G15/2039—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using contact heat with means for controlling the fixing temperature
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- General Physics & Mathematics (AREA)
- Fixing For Electrophotography (AREA)
- Control Or Security For Electrophotography (AREA)
Abstract
The present invention provides the image forming apparatus and its image forming method that can more reduce the power consumption in fixing device.The device has：Image forming part (3) forms toner picture on the recording medium；Heating part (91) and pressurization part (92), are provided at the heating pressing member of fixing section；Primary heater (95a) is set to inside heating part, heats the central portion of the heating part；Secondary heater (95b) is set to inside heating part, heats the peripheral portion of the heating part；And control unit (13), each heater is set to be alternately repeated heated condition and non-heated state to heat heating part, control unit by first, second heater it is any for heated condition in a manner of carry out alternately computer heating control, and when rated condition is set up, control for make the heating time of at least one heater than the alternately computer heating control when it is short, make any in first, second heater to be in non-heated state in heated condition or the first, second heater.
Description
Technical field
The present invention relates to image forming apparatus and its image forming methods.
Background technique
Image forming apparatus (MFP：Multi-Functional peripheral：Multi-function peripheral) using for example
Toner as visualization material forms the visual image for corresponding to image data, and exports as output image to note
On recording medium.Fixing device is by being pressed to form the recording medium for having toner picture, thus by toner and recording medium
Integration.
Summary of the invention
Invent the project intended to solve
But the power saving project " Energy Star " as being seen in Environmental Protection Agency USA (EPA) propulsion, Germany's connection
Blue angels system of Environmental Agency of nation operation etc. is such, in image forming apparatus, also more further requirement power saving saving.
On the other hand, in the power consumption of image forming apparatus, the power consumption of fixing device occupies very big ratio.
Therefore, the demand for reducing the power consumption in fixing device is increasing.
The present application is exactly given this situation to make, it will thus provide can be further reduced in fixing device
The image forming apparatus and its image forming method of power consumption are as a purpose.
Means for solving the problems
According to the embodiment for solving the above subject, a kind of image forming apparatus is provided, is had：Image is formed
Portion, for forming toner picture on the recording medium；Heating part and pressurization part are provided at the heating pressing member of fixing section；The
One heater, set on the inside of the heating part, for heating the central portion of the heating part；Secondary heater is set to described add
The inside in hot portion, for heating the peripheral portion of the heating part；And control unit, make the primary heater and second heating
Alternately Repeat-heating state heats the heating part with non-heated state to device, wherein the control unit adds with described first
In hot device and the secondary heater any mode for the heated condition carry out alternately computer heating control, and rated condition at
Immediately, it controls to make the heating time of at least one heater in the primary heater and the secondary heater than the friendship
It is short when for computer heating control, make any in the heated condition or institute in the primary heater and the secondary heater
It states primary heater and the secondary heater both sides is in the non-heated state.
According to the embodiment for solving the above subject, the image forming method in a kind of image forming apparatus is provided,
It includes：Toner picture is formed on the recording medium；And pass through the heating part by primary heater and secondary heater heating
It is fixed the toner picture, in described image forming method, to appoint in the primary heater and the secondary heater
One carries out alternately computer heating control for the mode of heated condition, and when rated condition is set up, controls to make the primary heater
It is short when with heating time of at least one heater in the secondary heater than the alternately computer heating control, make described first plus
It is any in hot device and the secondary heater to be in the heated condition or the primary heater and the secondary heater
Both sides are in non-heated state.
Detailed description of the invention
Fig. 1 is the figure for showing the composition of image forming apparatus of present embodiment.
Fig. 2 is the figure for showing the composition of the control unit in the image forming apparatus of present embodiment.
Fig. 3 is the sectional view for showing the composition of the fixing section in the image forming apparatus of present embodiment.
Fig. 4 is the cross section for showing heating roller and pressure roller in the fixing section of the image forming apparatus of present embodiment
Figure.
Fig. 5 is the figure for showing other compositions of heat/pressure mechanism of fixing section.
Fig. 6 is the figure for showing other compositions of heat/pressure mechanism of fixing section.
Fig. 7 is determining for heating roller temperature in the image forming apparatus indicated by present embodiment and pressure roller temperature specifications
The figure of shadow temperature region.
Fig. 8 is for illustrating that the temperature in the image forming apparatus of present embodiment controls beginning opportunity (timing)
Figure.
Fig. 9 is the figure for illustrating the heater lamp bright light control method in the image forming apparatus of present embodiment.
Figure 10 is the process for illustrating the heater lamp bright light control flow in the image forming apparatus of present embodiment
Figure.
Specific embodiment
Hereinafter, being illustrated referring to attached drawing to embodiment.
Fig. 1 is the figure for showing the composition of image forming apparatus of present embodiment.
Image forming apparatus 101 has：Electro-mechanical part 1, write section 2, image forming part 3, manuscript reading section 4, development section 5,
Transfer section 6, cleaning section 7, de-power unit 8 and fixing section 9.
Manuscript reading section 4 includes such as 600dpi (dot per inch：Dots per inch)/7500 pixels CCD sensing
The image information obtained as the reflected light signal for the light for exposing to original copy is converted to electric signal by device.
Electro-mechanical part 1 is to picture supporting body (for example, photoconductor drum 31 of aftermentioned cylindrical shape) for being set to image forming part 3
The charge of surface supply specified polarity.Also, as supporting body is not limited to cylindrical shape, either endless belt, is also possible to
The component of cylindrical shape is configured in the inside of endless belt.
Write section 2 is made and irradiating laser beam to the photoreceptor layers on the surface of the photoconductor drum 31 charged by electro-mechanical part 1
The potential change of photoreceptor layers.The intensity of laser beam corresponds to the image information of the object formed as image and changes.It is photosensitive
The part of the potential change of body layer just becomes sub-image.Such as outer diameter of photoconductor drum 31 is 100mm, in metallic matrix (hollow aluminum)
Surface have photoreceptor layers.Photoreceptor layers include such as Organophotoreceptor (OPC).
Development section 5, transfer section 6, cleaning section 7, de-power unit 8 are equipped on image forming part 3.Photoconductor drum 31 is along for example suitable
Clockwise is rotated with defined speed.By the rotation of itself, the sub-image on photoconductor drum 31 is transferred into development section 5, turns
Print portion 6, cleaning section 7 and de-power unit 8.
Development section 5 supplies toner to photoconductor drum 31, and sub-image is made to become visual toner picture.In development section 5
Including magnetic roller (not shown) and development sleeve (not shown).Magnetic roller utilizes rotation of the magnetic-adsorption by development sleeve on one side
Mobile toner is selectively provided to the sub-image on the surface of photoconductor drum 31 on one side.Also, development sleeve and photoconductor drum
31 interval is positioned by the guide roll contacted with photoconductor drum surface.In addition, development sleeve is by non-magnetic material, such as stainless steel
Or aluminium is formed.
Sheet-transport belt and transfer roll are equipped in transfer section 6.Sheet-transport belt is endless belt, is transmitted from aftermentioned paper supply
The paper (recording medium) that portion 11 supplies.It is applied with defined voltage on the transferring roller.Pass through the electric field of transfer roll, toner picture
It is moved on the paper by sheet-transport belt transmission.
Fibre plate, the surface covering of transfer residual toner, paper that cleaning section 7 scrapes removing mechanism (such as brush body)
The foreign matter that agent etc. transmits together with paper is contained in discarded toner/foreign matter incorporating section.
De-power unit 8 removes the residual charge on the surface of photoconductor drum 31, restores the current potential of photoreceptor layers to by electro-mechanical part 1
Original state before electrification.De-power unit 8 has LED array, in the LED array, by wavelength of the output for example than 770nm long
The LED element of feux rouges is arranged along the axis direction of photoconductor drum 31.
Image forming apparatus 101 also has：Paper is supplied to the sheet feed section 11 of the transfer section 6 of image forming part 3, will be turned
It is printed on the fixing section 9 of the paper fixing of toner picture and receives the paper discharge unit of paper of the toner picture by fixing section 9 after fixed
12。
Also, image forming apparatus 101 can not only form the color for corresponding to the image information read by manuscript reading section 4
Adjustment picture, and can also be formed and be provided corresponding to not shown external device (ED), such as PC (PC) or FAX (fax)
Image information toner picture.
Fig. 2 is the figure for showing the composition of the control unit in the image forming apparatus of present embodiment.
Control unit 13 has：Interface 131, memory cell 133, counter unit 135, timer unit 137 and in
Entreat processing unit (CPU) 139.
Interface 131 accepts the input data inputted from external input unit 17.It include corresponding to image to believe in input data
The number of the output image of breath, output image multiplying power, the size of recording medium, printing start operation input etc..Memory cell
133 keep numeric data, the image information etc. of input.Counter unit 135 counts image and exports number.Timer unit 137
Time needed for measuring the movement of image forming apparatus 101.The movement of CPU139 comprehensively control image forming apparatus 101.
Fig. 3 is the sectional view for showing the composition of the fixing section in the image forming apparatus of present embodiment.
Fixing section 9 has heating roller 91 and the pressurization for the offer roll-gap region 90 being adjacent to by least one party's flexible deformation
Roller 92.The roller supporter 93 of heating roller 91 or pressure roller 92 is supported to apply pressure by 94 pairs of spring, the outer peripheral surface of a roller connects
Touch the outer peripheral surface in another roller.
The diameter of heating roller 91 is φ 30mm.Heating roller 91 with a thickness of the aluminium of 0.8mm by constituting.In roller surface with fluorine tree
The release layers such as rouge (polyflon).The diameter of pressure roller 92 is φ 30mm.Pressure roller 92 around mandrel 92a with
The elastic layer 92b being made of silicon rubber or fluorubber etc..
Heating device 95 is equipped in the inside of heating roller 91.Heating device 95 includes heater lamp, such as in heating source
Halogen lamp.
Fig. 4 is the cross for showing heating roller 91 and pressure roller 92 in the fixing section of the image forming apparatus of present embodiment
The figure in section.
It is furnished with 2 heater lamps 95a, 95b in heating roller 91.That is, heating roller 91 has the center lamp of heating central portion
The heater lamp of 95a and the side lamp 95b in heated periphery portion two segmentations.Each heater lamp 95a, 95b is driven by heater lamp
It moves circuit 15 and is providing opportunity (timing) bright light.About defined opportunity, will be explained below.In addition, each heater
The power consumption of lamp 95a, 95b are 600W.
The temperature of detection heating roller surface is respectively equipped on the central portion and peripheral portion of the length direction of heating roller 91
Temperature sensor (thermistor) 96,97.Temperature sensor (temperature-sensitive electricity is equipped on the central portion of the length direction of pressure roller 92
Resistance) 98.
In addition, the heat/pressure mechanism of fixing section is not limited to Fig. 3, composition shown in Fig. 4.
For example, as shown in figure 5, being also possible to using the band body 99 contacted with pressure roller 92 and in pressure roller 92 and with body 99
Between formed roll gap belt roller 191 and the not direct composition contacted with pressure roller 92 of heating roller 91.At this point, heating device can also be made
95 are located at the peripheral side with body 99.
In addition, as shown in fig. 6, being also possible to using the band body 99 contacted with heating roller 91 and in heating roller 91 and with body 99
Between formed roll gap belt roller 292 and the not direct composition contacted with heating roller 91 of pressure roller 92.
Fig. 7 is determining for heating roller temperature in the image forming apparatus indicated by present embodiment and pressure roller temperature specifications
The figure of shadow temperature region.
In Fig. 7, if the temperature of heating roller 91 and pressure roller 92 in the fixing good area indicated by symbol A,
The defects of fixing is bad image will not then be generated.In Fig. 7, indicated under given conditions sometimes by the region that symbol B is indicated
It generates and is fixed undesirable temperature region.For example, to thickness ratio 100g/m2When thick recording medium carries out image formation or into
When the full-color image output of row toner thickness, the temperature of heating roller 91 and pressure roller 92 is preferably used and is indicated by symbol A
Temperature region temperature.
Then, illustrate the bright light control method of the heater lamp in the image forming apparatus of present embodiment.
In existing image forming apparatus, the heating of the heater lamp in printing be set to it is higher, in order to avoid generate it is fixed
Shadow is bad.That is, in existing image forming apparatus, in press, even be set to thickness (or every square meter weight),
Size maximum recording medium will not generate the fixing undesirable temperature as caused by underheat when being fixed.
Therefore, in press, different according to the thickness of recording medium (or every square meter weight), size, it can be by heating roller
91 temperature control is than existing low temperature.But when so being controlled with low temperature, it is fixed not as caused by underheat
A possibility that good generation, will improve, and therefore, it is necessary to not generate the bad such temprature control method of fixing.
[temperature controls beginning opportunity (timing)]
Fig. 8 is the figure for illustrating the control beginning opportunity of the temperature in the image forming apparatus of present embodiment.In Fig. 8 institute
In the coordinate shown, the longitudinal axis indicates the temperature of heating roller 91, and horizontal axis indicates the time.
In the prior art, when restoring when the power supply of image forming apparatus 101 is connected or from suspend mode etc., image shape
It is executed before starting image formation movement at device 101 and acts the preheating that fixing section 9 is heated to defined fixing temperature.This
When fixing temperature be the temperature that can be reliably fixed image regardless of the thickness of recording medium, size.
Once preheating starts, then heater lamp 95a, 95b bright light, thus the temperature of heating roller 91 rises.If heating roller
91 temperature reaches ready temperature, then becomes standby mode.If user operates and printing operation starts, toner picture
It is transferred to recording medium, which is transferred into fixing section 9.
In fixing section 9, recording medium is heated roller 91 and 92 heat/pressure of pressure roller and is fixed, but uses at this time
It is pulled away in the heat of heating recording medium, thus the temperature decline of heating roller 91.The temperature of decline because recording medium thickness,
Size etc. and it is different.In fig. 8, which is indicated by temperature negative characteristic curve A, B, C.At this point, if temperature is lower limit temperature
Degree is hereinafter, can then be fixed bad.Once temperature sensor 96,97 detects that the temperature for making heating roller 91 because of heat release is lower than
Set temperature, then control unit 13 makes heater lamp 95a, 95b bright light via heater lamp drive circuit 15.Heating roller as a result,
91 temperature rises, and when reaching the predetermined temperature higher than ready temperature, control unit 13 makes heater lamp 95a, 95b turn off the light.?
After this, control unit 13 executes by making heater lamp 95a, 95b bright light/turn off the light and controls the switch of the temperature of heating roller 91
(ON/OFF) it controls, until printing operation terminates.
Also, the temperature decline of the heating roller 91 as caused by recording medium maximum, 2,3 in first fixing movement
Opening number per treatment in this wise can all become smaller.This is because the temperature of the fixing section 9 including heating roller 91 and pressure roller 92 exists
Fixing is minimum when starting.
According to above-mentioned result of study, even needing to continue to control lower than existing temperature value with the temperature of heating roller 91
When the heating roller 91 caused by recording medium temperature decline will not become lower limit temperature or less.
The control beginning opportunity for meeting the condition, which refers to decline from the temperature of the heating roller 91 as caused by recording medium, restores
Below opportunity.
(1) printing starts opportunity that is rear, have passed through the stipulated time (t)
It (2) is the opportunity of predetermined temperature or more after printing starts, by the temperature of stipulated time (t) and heating roller 91
(3) printing starts the opportunity of recording medium that is rear, being fixed regulation number
(4) it is combined with the opportunity of above-mentioned (1)~(3)
[heater lamp bright light control method]
As described above, it after printing operation starts, executes and heater lamp is controlled according to the temperature of heating roller 91
Switch (ON/OFF) control for bright light/turn off the light.
Fig. 9 is the figure for illustrating the heater lamp bright light control method in the image forming apparatus of present embodiment.Fig. 9
(1) existing heater lamp bright light control method is indicated, Fig. 9 (2) indicates the heater lamp bright light control method of present embodiment.
In the existing heater lamp bright light control method of Fig. 9 (1), center lamp 95a and side lamp 95b alternately every 1 second
All bright lights.Therefore, in heater lamp bright light, any bright light always of center lamp 95a or side lamp 95b.Power consumption at this time is total
It is for 600W.
In the heater lamp bright light control method of the present embodiment of Fig. 9 (2), center lamp 95a and side lamp 95b difference are bright
It lamp 1 second, turns off the light 1.5 seconds.Moreover, when center lamp 95a turns off the light, side lamp 95b bright light.Therefore, in the bright light control method,
There are which lamp not 0.5 second time-bands of bright light in a period of 2.5 seconds.As a result, the power consumption of present embodiment
Just become 80% (=(2.5-0.5)/2.5) of existing power consumption.
In addition, the present application is not limited to mode shown in Fig. 9 (2).That is, the bright light of side lamp 95b needs not be center lamp 95a
Turn off the light opportunity.Which lamp is set all as long as can be realized under the condition of center lamp 95a and bright light when side lamp 95b difference
The not time-bands of bright light.
According to above-mentioned which lamp of setting not control methods of the time-bands of bright light, turning off the light the time for each lamp is only changed
The reduction rate of power consumption can easily be controlled.Therefore, flexibly correspondence image it can form the specification of device 101 and reach proper
When electric power cut down.
Figure 10 is the process for illustrating the heater lamp bright light control flow in the image forming apparatus of present embodiment
Figure.
In movement 01, when restoring when the power supply of image forming apparatus 101 is connected or from suspend mode, control unit 13
It executes and acts the preheating that fixing section 9 is heated to defined fixing temperature.In movement 02, at the end of preheating, control unit 13
" ready " is shown on the control panel (not shown) of image forming apparatus 101, waits the operation of user.
In movement 03, if user for the condition of printing and operates start button from control panel setting, control
Portion 13 starts printing operation.
In movement 04, control unit 13 checks whether the recording medium of printing is plain paper.In image forming apparatus 101
In, recording medium is divided into plain paper and ground paper according to thickness (or every square meter weight).Then, control unit 13 is according to user
Setting or by be set to sheet feed section 11 sensor check whether it is plain paper.
When recording medium is not plain paper (movement 04 in no), i.e., recording medium is when being ground paper, may heat because reducing
The electric power of device lamp and to generate fixing temperature bad.Therefore, in movement 10, control unit 13 implements common lamp bright light control.
(it is in movement 04) when recording medium is plain paper, in movement 05, the size (area) of inspection record medium
It whether is A4 or less or LT (Letter Size：Letter size) below.It is different according to image forming apparatus 101, using A4 or less
Or LT it is below which be different.
When recording medium is not predetermined size or less (movement 05 in no), since thermal discharge increases, thus may be due to
Reduce the electric power of heater lamp and to generate fixing temperature bad.Therefore, in movement 10, control unit 13 is implemented in printing operation
Common lamp bright light control.
(it is in movement 05) when recording medium is predetermined size or less, in movement 06, control unit 13 checks printing
Whether state meets defined condition.That is, inspection (1) printing have passed through the opportunity of stipulated time (X seconds), (2) printing after starting
After beginning after stipulated time (X seconds) and 91 temperature of heating roller start for the opportunity more than predetermined temperature (Y DEG C), (3) printing
At least two in the opportunity for providing the recording medium fixing of number (Z) or more and (4) above-mentioned (1)~(3) have been set up
Whether any opportunity (timing) in opportunity is true.Also, above-mentioned each constant for example may be set to X=15 seconds, Y=160
DEG C, Z=10.
In the state of printing condition against regulation (no in movement 06), the control due to executing present embodiment can
It is bad fixing temperature to be generated.Therefore, in movement 10, control unit 13 implements common lamp bright light control.
(it is in movement 06) when condition as defined in meeting in the state of printing, in movement 07, control unit 13 is dynamic in printing
In work, the lamp bright light interval (Inter for executing present embodiment draws I) control.
Also, processing can also be further increased in process shown in Fig. 10, checks whether it is related toner thickness
The image formation processing of full-color image implement common lamp bright light when for full-color image and control, if not full-color
Chromatic graph picture can also then execute the lamp bright light Separation control of present embodiment.
In addition, when size, the type of recording medium mix, it can also be anti-to every 1 recording medium printed
The processing of 04~movement of multiple execution movement 10.
The image forming apparatus of present embodiment from the description above can not generate the bad situation of fixing temperature
Lower reduction fixing device uses electric power.In addition, can easily control electric power in the lamp bright light control of present embodiment and disappear
The rate of descent of consumption.Therefore, neatly correspondence image it can form the specification of device 101 and reach appropriate electric power and cut down.
Also, hardware had can be used both to constitute in each function of illustrating in the above-described embodiment, and software also can be used
Computer reading is set to describe the program of each function to realize.In addition, each function can also suitably select software, any in hardware
To constitute.
In turn, the program that each function can also be stored in recording medium (not shown) by reading computer is come real
It is existing.Here, as long as the recording medium in present embodiment is able to record program and is that the record that computer can be read is situated between
Matter, then its record form is that any form is ok.
Also, the present invention is not fixedly limited to above embodiment, in implementation phase, can not depart from its ancestor
Constituent element is set to deform and embody in the range of purport.
The appropriately combined of disclosed in above embodiment multiple constituent elements forms various inventions.For example,
Some constituent elements can also be deleted from all constituent elements shown in embodiment.Also, it appropriately combined can also relate to
And the constituent element to different embodiments.
Description of symbols
1 ... electro-mechanical part, 2 ... write sections, 3 ... image forming parts, 4 ... manuscript reading sections, 5 ... development sections, 6 ... transfer sections,
7 ... cleaning sections, 8 ... de-power unit, 9 ... fixing sections, 11 ... sheet feed sections, 12 ... paper discharge units, 13 ... control units, 15 ... heater lamps drive
Dynamic circuit, 17 ... input units, 31 ... photoconductor drums, 91 ... heating rollers, 92 ... pressure rollers, 95 ... heating devices, the center 95a ...
Lamp, 95b ... side lamp, 101 ... image forming devices.
Claims (10)
1. a kind of image forming apparatus, has：
Image forming part, for forming toner picture on the recording medium；
Heating part and pressurization part are provided at the heating pressing member of fixing section；
Primary heater, set on the inside of the heating part, for heating the central portion of the heating part；
Secondary heater, set on the inside of the heating part, for heating the peripheral portion of the heating part；And
Control unit, making the primary heater and the secondary heater, alternately Repeat-heating state adds with non-heated state
The heat heating part,
Wherein, the control unit is by any in a manner of the heated condition in the primary heater and the secondary heater
Alternately computer heating control is carried out, and when rated condition after printing starts is set up, is controlled to make the primary heater and described the
The non-heated time of two heaters than the alternately computer heating control duration, makes in the primary heater and the secondary heater
It is any to be in the non-heated shape in the heated condition or the primary heater and the secondary heater both sides
State.
2. image forming apparatus according to claim 1, wherein the rated condition meets in following conditions (1)~(3)
Whole：
Condition (1)：The thickness of the recording medium or every square meter weight are the first specified value or less；
Condition (2)：The area of the recording medium is the second specified value or less；
Condition (3)：Described image forms device in printing operation and is in specified states.
3. image forming apparatus according to claim 2, wherein refer in the specified states in following states
(1) any state in~(4)：
State (1)：It prints after starting by the stipulated time；
State (2)：It prints after starting by the temperature of stipulated time and the heating part to be more than predetermined temperature；
State (3)：Printing has been fixed the recording medium of regulation number or more after starting；
State (4)：At least two establishments in above-mentioned state (1)~(3).
4. image forming apparatus according to claim 2 or 3, wherein the rated condition also meets following conditions (4)：
Condition (4)：The toner picture for being formed in the recording medium is not full-color image.
5. image forming apparatus according to any one of claim 1 to 3, wherein when the rated condition is invalid,
The control unit makes the time of the heated condition of the primary heater and the secondary heater and the non-heated shape
The time of state is equal.
6. the image forming method in a kind of image forming apparatus, including：
Toner picture is formed on the recording medium；And
The toner picture is fixed by the heating part by primary heater and secondary heater heating,
In described image forming method, with any side for heated condition in the primary heater and the secondary heater
Formula carries out alternately computer heating control, and when rated condition after printing starts is set up, controls to make the primary heater and described
The non-heated time of secondary heater than the alternately computer heating control duration, makes the primary heater and the secondary heater
In any be in non-heated shape in the heated condition or the primary heater and the secondary heater both sides
State.
7. the image forming method in image forming apparatus according to claim 6, wherein under the rated condition meets
State the whole in condition (1)~(3)：
Condition (1)：The thickness of the recording medium or every square meter weight are the first specified value or less；
Condition (2)：The area of the recording medium is the second specified value or less；
Condition (3)：Described image forms device in printing operation and is in specified states.
8. the image forming method in image forming apparatus according to claim 7, wherein be in the specified states
Refer in any state in following states (1)~(4)：
State (1)：It prints after starting by the stipulated time；
State (2)：It prints after starting by the temperature of stipulated time and the heating part to be more than predetermined temperature；
State (3)：Printing has been fixed the recording medium of regulation number or more after starting；
State (4)：At least two establishments in above-mentioned state (1)~(3).
9. the image forming method in image forming apparatus according to claim 7 or 8, wherein the rated condition is also
Meet following conditions (4)：
Condition (4)：The toner picture for being formed in the recording medium is not full-color image.
10. the image forming method in the image forming apparatus according to any one of claim 6 to 8, wherein described
When rated condition is invalid, make the time of the heated condition of the primary heater and the secondary heater with it is described non-
The time of heated condition is equal.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013184510A JP5802719B2 (en) | 2013-09-05 | 2013-09-05 | Image forming apparatus |
| JP2013-184510 | 2013-09-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104423240A CN104423240A (en) | 2015-03-18 |
| CN104423240B true CN104423240B (en) | 2018-11-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410245438.6A Active CN104423240B (en) | 2013-09-05 | 2014-06-04 | Image forming apparatus and its image forming method |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20150063852A1 (en) |
| JP (1) | JP5802719B2 (en) |
| CN (1) | CN104423240B (en) |
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| JP7188142B2 (en) * | 2019-01-31 | 2022-12-13 | ブラザー工業株式会社 | Layer transfer device |
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| US6240263B1 (en) * | 1997-12-19 | 2001-05-29 | Canon Kabushiki Kaisha | Flicker suppression device in electronic equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11242404A (en) * | 1997-12-19 | 1999-09-07 | Canon Inc | Device and method for flicker suppression |
| JP4469446B2 (en) * | 1999-11-15 | 2010-05-26 | 株式会社リコー | Image forming apparatus |
| JP2001272876A (en) * | 2000-03-27 | 2001-10-05 | Canon Inc | Fixing device and image forming apparatus provided with fixing device |
| US20090226201A1 (en) * | 2008-03-07 | 2009-09-10 | Kabushiki Kaisha Toshiba | Fixing device and temperature controlling method |
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2013
- 2013-09-05 JP JP2013184510A patent/JP5802719B2/en active Active
-
2014
- 2014-06-04 CN CN201410245438.6A patent/CN104423240B/en active Active
- 2014-07-29 US US14/445,350 patent/US20150063852A1/en not_active Abandoned
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6240263B1 (en) * | 1997-12-19 | 2001-05-29 | Canon Kabushiki Kaisha | Flicker suppression device in electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| US20150063852A1 (en) | 2015-03-05 |
| JP2015052658A (en) | 2015-03-19 |
| JP5802719B2 (en) | 2015-10-28 |
| CN104423240A (en) | 2015-03-18 |
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